スミソニアン国立動物園のインスタグラム(smithsonianzoo) - 9月3日 23時16分

Did you know: Porcupines are covered in about 30,000 quills. They cannot throw or shoot their quills. Because quills are so lightly attached, they come off easily when a predator encounters them.Visit our North American Porcupines, located near the prairie dog exhibit: https://nationalzoo.si.edu/visit.

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